JP5580785B2 - Floating flap gate - Google Patents

Floating flap gate Download PDF

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JP5580785B2
JP5580785B2 JP2011137771A JP2011137771A JP5580785B2 JP 5580785 B2 JP5580785 B2 JP 5580785B2 JP 2011137771 A JP2011137771 A JP 2011137771A JP 2011137771 A JP2011137771 A JP 2011137771A JP 5580785 B2 JP5580785 B2 JP 5580785B2
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door body
end side
flap gate
floating
water
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JP2013002250A (en
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京一 仲保
俊明 森井
善人 山川
真規 乾
雄一郎 木村
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Hitachi Zosen Corp
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本発明は、例えば防波堤の開口部に設置され、増水時、増水した水が生活空間や地下空間に流れ込まないように、扉体を浮上させて前記開口部を遮断する浮体式フラップゲートに関するものである。   The present invention relates to a floating flap gate that is installed at, for example, an opening of a breakwater and raises a door to block the opening so that the increased water does not flow into a living space or underground space when the water increases. is there.

増水時に、増水した水が生活空間や地下空間に流れ込まないように、流入しようとする水の浮力を利用して扉体を浮上させ、例えば防波堤の開口部を遮断する浮体式フラップゲートがある（例えば特許文献１）。   There is a floating flap gate that lifts the door body using the buoyancy of the water to be introduced so that the increased water does not flow into the living space or underground space when the water rises, for example, blocking the opening of the breakwater ( For example, Patent Document 1).

この浮体式フラップゲートにおいて、浮上した扉体と扉体両側の側部戸当りとの水密方法として、側部戸当りと相対する扉体の側面部に側部水密ゴムを取り付けている（例えば特許文献２）。   In this floating flap gate, as a method of watertightness between the floated door and the side doors on both sides of the door, side watertight rubber is attached to the side surface of the door opposite to the side doors (for example, patents) Reference 2).

一方、扉体の底部の水密は、扉体の底部には起立揺動の回転中心となるヒンジ部があるため、扉体の側部に比べて水密ゴムを設置することが難しい。そこで、例えば特許文献３では、扉体のヒンジ部を避けた位置の扉体の表面側に水密ゴム膜を取り付けている。   On the other hand, the watertightness of the bottom part of the door body is difficult to install the watertight rubber as compared with the side part of the door body because the bottom part of the door body has a hinge part that serves as the center of rotation of the standing swing. Therefore, for example, in Patent Document 3, a watertight rubber film is attached to the surface side of the door body at a position avoiding the hinge portion of the door body.

しかしながら、特許文献３のように、扉体の表面側に水密ゴム膜を設置した、図８に示したような場合は、扉体１の起立時には、同図（ｂ）に示すようにヒンジ部２の回転中心と水密ゴム膜３の設置部のずれによって水密ゴム膜３に余りが生じて弛むことになる。そして、この弛みにより水密性が低下するのに加えて、弛んだ空間に異物が侵入して水密ゴム膜３を損傷させる場合がある。   However, as shown in FIG. 8 in which a water-tight rubber film is installed on the surface side of the door body as in Patent Document 3, when the door body 1 stands up, as shown in FIG. Due to the difference between the center of rotation 2 and the installation portion of the water-tight rubber film 3, the water-tight rubber film 3 is left with a remainder. In addition to the decrease in watertightness due to the slack, foreign matter may enter the slack space and damage the watertight rubber film 3 in some cases.

反対に、図９に示すように、扉体１の背面側に水密ゴム膜３を設置した場合は、扉体１の起立時には、水密ゴム膜３が引き伸ばされる一方（同図（ｂ）参照）、倒伏時には水密ゴム膜３が屈曲したりするので、強靭で柔軟な水密ゴム膜３が必要になる。   On the contrary, as shown in FIG. 9, when the water-tight rubber film 3 is installed on the back side of the door body 1, the water-tight rubber film 3 is stretched when the door body 1 stands (see FIG. 9B). Since the water-tight rubber film 3 bends when lying down, a strong and flexible water-tight rubber film 3 is required.

特開２００１−２１４４２５号公報JP 2001-214425 A 実開昭６２−７２３３３号公報Japanese Utility Model Publication No. 62-72333 特開昭５８−４１１０９号公報JP 58-41109 A

本発明が解決しようとする問題点は、従来の浮体式フラップゲートは、扉体を起伏揺動する回転中心に回転軸を設けているので、回転中心を避けた位置に水密ゴム膜を取り付ける必要があり、水密ゴム膜の変形量が大きくなって水密性の低下や水密ゴム膜を損傷させる場合があったり、強靭で柔軟な水密ゴム膜が必要になるという点である。   The problem to be solved by the present invention is that the conventional floating-type flap gate is provided with a rotation shaft at the center of rotation that swings the door body up and down, so it is necessary to attach a watertight rubber film at a position avoiding the center of rotation. In other words, the amount of deformation of the water-tight rubber film is increased, which may cause deterioration of the water-tightness, damage to the water-tight rubber film, or the need for a strong and flexible water-tight rubber film.

本発明は、上記問題を解決すべく、扉体の底面に設置する水密ゴム膜の変形量を小さくできて従来の問題点を解決できる浮体式フラップゲートを提供することを目的としてなされたものである。   In order to solve the above-mentioned problems, the present invention was made for the purpose of providing a floating flap gate that can reduce the amount of deformation of the water-tight rubber film installed on the bottom surface of the door body and solve the conventional problems. is there.

本発明の浮体式フラップゲートは、
開口部或いは出入口に設置され、水が流入する際、前記開口部或いは前記出入口を遮断すべく、前記流入する水の方向に高さ方向の平面内で、基端側を回転中心として先端側が起立揺動する扉体を有する浮体式フラップゲートであって、
扉体に設けるヒンジ機構を、扉体の先端側側面と基端側側面にそれぞれ突設状に取り付けたピンと、これらピンを案内すべく扉体の両側の側部戸当りに設けた、扉体の前記回転中心を中心とする円弧状の溝とで構成すると共に、
前記ヒンジ機構のガイド機構を、扉体の基端側に設けた凹円弧状の接触面と、扉体を収容する基台側に設けた、前記凹円弧状の接触面と対をなす凸円弧状の接触面とで構成し、
扉体の基端側と基台を繋ぐ水密ゴム膜を、前記扉体の回転中心を通るように配置したことを最も主要な特徴としている。 The floating flap gate of the present invention is
Installed at the opening or entrance, when water flows in, the distal end rises with the base end as the center of rotation in a plane in the height direction in the direction of the inflowing water to block the opening or entrance. A floating flap gate having a swinging door,
A door body provided with a hinge mechanism provided on the door body in a projecting manner on each of the front end side surface and the base end side surface of the door body, and provided on the side doors on both sides of the door body to guide these pins. And an arc-shaped groove centered on the rotation center of
Convex circle which makes the guide mechanism of the said hinge mechanism a pair with the concave arc-shaped contact surface provided in the base end side of the door body, and the concave arc-shaped contact surface provided in the base side which accommodates a door body Composed of arcuate contact surfaces,
The most important feature is that a water-tight rubber film connecting the base end side of the door body and the base is disposed so as to pass through the rotation center of the door body.

上記の本発明では、扉体の回転中心に回転軸が存在しないので、回転中心を通るように水密ゴム膜を配置することが可能になり、扉体の起伏動作時の水密ゴム膜の変形量を最小にすることができる。   In the above-mentioned present invention, since there is no rotation axis at the rotation center of the door body, it becomes possible to arrange the water-tight rubber film so as to pass through the rotation center, and the deformation amount of the water-tight rubber film during the undulation operation of the door body Can be minimized.

上記本発明において、扉体の先端側側面と基端側側面に取り付けたピンは、位相のずれが可能な限り９０°となるように設けた場合には、先端側と基端側でそれぞれ法線方向に拘束される扉体は、安定した状態で回転中心が確保される。   In the present invention, when the pins attached to the distal side surface and the proximal side surface of the door body are provided so that the phase shift is 90 ° as much as possible, the front side and the proximal side respectively The center of rotation of the door body restrained in the linear direction is secured in a stable state.

本発明では、扉体の起伏動作時の水密ゴム膜の変形量を最小にすることができるので、水密性の低下や水密ゴム膜の損傷を最小限にすることができる。また、強靭で柔軟な水密ゴム膜が必要でないので、使用可能なゴムの種類が増加する。   In the present invention, since the amount of deformation of the water-tight rubber film during the undulation operation of the door body can be minimized, the deterioration of water-tightness and the damage of the water-tight rubber film can be minimized. Further, since a strong and flexible water-tight rubber film is not required, the number of usable rubbers increases.

本発明の浮体式フラップゲートの概略構成図で、（ａ）は側面側から見た図、（ｂ）は扉体基端側の拡大図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the floating type flap gate of this invention, (a) is the figure seen from the side surface side, (b) is an enlarged view of a door body base end side. 本発明の浮体式フラップゲートを平面方向から見た概略構成図である。It is the schematic block diagram which looked at the floating-type flap gate of this invention from the plane direction. 本発明の浮体式フラップゲートの扉体の先端側と基端側に設けたピンと、側部戸当りに設けた溝を説明する図である。It is a figure explaining the groove | channel provided in the pin provided in the front end side and base end side of the door body of the floating type flap gate of this invention, and a side door. 本発明の浮体式フラップゲートの扉体に設けたピンと側部戸当りに設けた溝を拡大して説明する図である。It is a figure which expands and demonstrates the groove | channel provided in the pin provided in the door body of the floating-type flap gate of this invention, and the side part door. （ａ）（ｂ）は本発明の浮体式フラップゲートの扉体に設けたピンの取り付け態様の一例を説明する図である。(A) (b) is a figure explaining an example of the attachment aspect of the pin provided in the door body of the floating type flap gate of this invention. 側部戸当り側から扉体にピンを取り付ける場合の一例を示した図である。It is the figure which showed an example in the case of attaching a pin to a door body from the side part contact side. ピンに代えて扉体に車輪を取り付けた場合の例を示した図である。It is the figure which showed the example at the time of replacing with a pin and attaching the wheel to the door body. 扉体の表面側に水密ゴム膜を設置した従来の浮体式フラップゲートの底部水密方法の問題点を説明する扉体を側面方向から見た図で、（ａ）は扉体の倒伏状態の図、（ｂ）は扉体の起立状態の図である。A side view of the door body explaining the problem of the bottom watertight method of a conventional floating flap gate with a watertight rubber film installed on the surface side of the door body, (a) is a diagram of the door body lying down (B) is a figure of the standing state of a door. 扉体の背面側に水密ゴム膜を設置した従来の浮体式フラップゲートの底部水密方法の問題点を説明する扉体を側面方向から見た図で、（ａ）は扉体の倒伏状態の図、（ｂ）は扉体の起立状態の図である。The figure which looked at the door body from the side direction explaining the problem of the bottom watertight method of the conventional floating flap gate which installed the watertight rubber film on the back side of the door body, (a) is the figure of the fall state of the door body (B) is a figure of the standing state of a door.

本発明は、扉体の底面に設置する水密ゴム膜の変形量を小さくするという目的を、扉体の基端側に設ける回転中心に回転軸が存在しない構成とすることで実現した。   The present invention achieves the object of reducing the amount of deformation of the water-tight rubber film installed on the bottom surface of the door body by adopting a configuration in which no rotation shaft exists at the rotation center provided on the base end side of the door body.

以下、本発明を実施するための形態を、図１〜図７を用いて詳細に説明する。
図１〜図４は本発明の浮体式フラップゲートの第１の例を説明する図である。 Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.
1-4 is a figure explaining the 1st example of the floating-type flap gate of this invention.

図１〜図４において、１１は例えば防波堤の開口部の路面rsに設置される、内部に浮体を備えた扉体１２を有する本発明の浮体式フラップゲートである。   1 to 4, reference numeral 11 denotes a floating flap gate of the present invention having a door body 12 provided with a floating body inside, for example, installed on a road surface rs of an opening of a breakwater.

この浮体式フラップゲート１１は、海洋（或いは河川）から生活空間や地下空間に水が流入しようとする際、流入する水の水圧を利用して、基端側１２ａを回転中心として先端側１２ｂを起立揺動させて開口部を水密状態に遮断するものである。   The floating-type flap gate 11 uses the water pressure of the inflowing water when the water is about to flow into the living space or the underground space from the ocean (or river). The opening is rocked upright and the opening is shut off in a watertight state.

この浮体式フラップゲート１１を構成する扉体１２は１つ（単数個）であって、扉体１２の、防波堤の開口部に設けた側部戸当り１３と相対する両側には側部水密ゴムが設けられている。   There is one (single) door body 12 constituting the floating flap gate 11, and side watertight rubber is provided on both sides of the door body 12 facing the side door stopper 13 provided at the opening of the breakwater. Is provided.

本発明の浮体式フラップゲート１１は、回転中心ｃを中心として扉体１２を起伏揺動させるヒンジ機構として、図１に示すように、扉体１２の先端側側面と基端側側面にそれぞれ、例えば円柱状のピン１２ｃ，１２ｄを溶接により突設状に取り付けている。そして、扉体１２の両側の側部戸当り１３には、前記回転中心ｃを中心とする半径Ｒ１とＲ２の円弧状の溝１３ａと１３ｂを設けている。   As shown in FIG. 1, the floating flap gate 11 of the present invention is a hinge mechanism that swings the door body 12 up and down around the rotation center c. For example, cylindrical pins 12c and 12d are attached in a protruding manner by welding. The side door stoppers 13 on both sides of the door body 12 are provided with arc-shaped grooves 13a and 13b having radii R1 and R2 with the rotation center c as the center.

前記溝１３ａ，１３ｂの円弧の長さは、扉体１２の起伏揺動の範囲とし、溝１３ａ，１３ｂの幅は、前記ピン１２ｃ，１２ｄの運動を法線方向（図３の白抜き矢印で示す方向）に拘束しつつ、円周方向に案内すべく摺動可能な程度の大きさとする。   The length of the arcs of the grooves 13a and 13b is within the range of the swinging movement of the door body 12, and the width of the grooves 13a and 13b is the normal direction (indicated by the white arrows in FIG. 3) of the movement of the pins 12c and 12d. The size is such that it can be slid to guide in the circumferential direction.

前記構成のヒンジ機構の場合、扉体１２の先端側側面に設けたピン１２ｃを案内する溝１３ａは、扉体１２の基端側側面に設けたピン１２ｄを案内する溝１３ｂよりも時計回り方向に９０°位相をずらせて設けている。このようにすれば、先端側と基端側でそれぞれ法線方向に拘束される扉体１２は、より安定した状態で回転中心ｃが確保される。   In the case of the hinge mechanism configured as described above, the groove 13a for guiding the pin 12c provided on the side surface on the distal end side of the door body 12 is more clockwise than the groove 13b for guiding the pin 12d provided on the side surface on the proximal side of the door body 12. Are provided with a 90 ° phase shift. If it does in this way, the rotation center c is ensured in the door body 12 restrained by the normal direction at the front end side and the base end side in a more stable state.

本発明の浮体式フラップゲート１１は、前記ヒンジ機構のガイド機構として、扉体１２の基端側１２ａに約９０°の範囲の凹円弧状接触面１２ａａを設けている。そして、扉体１２を収容する基台１４には、前記凹円弧状接触面１２ａａと対をなす、約９０°の範囲の凸円弧状接触面１４ａａを設けている。   The floating flap gate 11 of the present invention is provided with a concave arcuate contact surface 12aa in a range of about 90 ° on the base end side 12a of the door body 12 as a guide mechanism of the hinge mechanism. And the base 14 which accommodates the door body 12 is provided with a convex arcuate contact surface 14aa in a range of about 90 ° which makes a pair with the concave arcuate contact surface 12aa.

前記構成のガイド機構では、扉体１２の基端側１２ａに設けた凹円弧状接触面１２ａａが、扉体１２の起立揺動と共に、基台１４に設けたガイド部材１４ａの凸円弧状接触面１４ａａに沿って移動することで、ヒンジ機構をガイドする。   In the guide mechanism configured as described above, the concave arcuate contact surface 12aa provided on the base end side 12a of the door body 12 has a convex arcuate contact surface of the guide member 14a provided on the base 14 along with the upright swing of the door body 12. The hinge mechanism is guided by moving along 14aa.

前記構成のヒンジ機構では、扉体１２の回転中心ｃに回転軸が存在しないので、図２に示すように、回転中心ｃを通るように、扉体１２の幅方向に亘って一様に水密ゴム膜１５を配置することが可能になる。   In the hinge mechanism configured as described above, there is no rotation axis at the rotation center c of the door body 12, and as shown in FIG. 2, the watertightness is uniformly spread over the width direction of the door body 12 so as to pass through the rotation center c. The rubber film 15 can be disposed.

この水密ゴム膜１５は、例えば図１（ｂ）に示すように、扉体１２の基端側１２ａの端面に取付けた押さえ板１６と、基台１４に取付けた押さえ板１７を介してボルトで取り付ければよい。これら押さえ板１６，１７間には、扉体１２の起伏揺動時に水密ゴム膜１５を疵付けないようにするため、回転中心ｃ付近に隙間ｄを設ける。また、隙間ｄを設ける押さえ板１６，１７の端面は、水密ゴム膜１５の損傷を防止するために、図１（ｂ）に示すように、面取りを施しておく。   As shown in FIG. 1B, for example, the watertight rubber film 15 is bolted through a pressing plate 16 attached to the end surface of the base end side 12a of the door body 12 and a pressing plate 17 attached to the base 14. It only has to be attached. A gap d is provided between the pressing plates 16 and 17 in the vicinity of the rotation center c so that the water-tight rubber film 15 is not damaged when the door body 12 swings up and down. Further, the end surfaces of the pressing plates 16 and 17 that provide the gap d are chamfered as shown in FIG. 1B in order to prevent the watertight rubber film 15 from being damaged.

このような回転中心ｃを通る位置に水密ゴム膜１５を配置すれば、扉体１２の起伏動作時の水密ゴム膜１５の変形量を最小にすることができる。従って、止水性能が向上すると共に水密ゴム膜１５の耐久性が向上してメンテナンスの頻度を減少することができる。また、伸縮性の悪いゴムや、殆ど伸縮性のない遮水シートでも使用することができるので、使用できる止水用部材の種類が増加して、コストダウンにつながる。また、ゴムやシートの過剰な屈曲や余りが生じることを防ぐこともできる。   If the water-tight rubber film 15 is disposed at such a position passing through the rotation center c, the deformation amount of the water-tight rubber film 15 when the door body 12 is raised and lowered can be minimized. Accordingly, the water stopping performance is improved and the durability of the watertight rubber film 15 is improved, so that the frequency of maintenance can be reduced. In addition, since it is possible to use a rubber having poor elasticity or a water-impervious sheet having almost no elasticity, the number of water-stopping members that can be used increases, leading to cost reduction. Further, it is possible to prevent excessive bending or remainder of the rubber or sheet.

本発明は、前記の例に限るものではなく、各請求項に記載の技術的思想の範疇であれば、適宜実施の形態を変更しても良いことは言うまでもない。   The present invention is not limited to the above examples, and it goes without saying that the embodiments may be changed as appropriate within the scope of the technical idea described in each claim.

例えば、前記の発明例では、ピン１２ｃ，１２ｄを溶接で取り付けるものを示したが、溶接で取り付けることができない場合は、ねじで取り付けても良い。   For example, in the above-described invention example, the pins 12c and 12d are attached by welding. However, if they cannot be attached by welding, they may be attached by screws.

ねじで取り付ける場合は、側部戸当り１３、扉体１２を設置した後でのピン１２ｃ，１２ｄの取り付けや、ピン１２ｃ，１２ｄの突出量の調整のため、図５に示すように、扉体１２の内側からピン１２ｃ，１２ｄを突出させ、ロックナット１９で固定する構造とすることが望ましい。この場合、扉体１２におけるピン１２ｃ，１２ｄの取り付け部に作業用開口を設け、開閉蓋２０を取り付けておくようにすれば良い。突出部は、図５（ａ）のように、ねじがむき出しのままでも良いが、図５（ｂ）のようにカバー２１を取り付けても良い。なお、２２はカバー２１の固定用ロックナットを示す。   When mounting with screws, as shown in FIG. 5, in order to attach the pins 12c and 12d after the side doors 13 and the door body 12 are installed and to adjust the protruding amount of the pins 12c and 12d, as shown in FIG. It is desirable that the pins 12 c and 12 d protrude from the inside of the pin 12 and be fixed by the lock nut 19. In this case, a work opening may be provided in the attachment portion of the door 12 for the pins 12c and 12d, and the opening / closing lid 20 may be attached. As shown in FIG. 5A, the protruding portion may be left exposed, but the cover 21 may be attached as shown in FIG. 5B. Reference numeral 22 denotes a lock nut for fixing the cover 21.

また、扉体１２の内側からピン１２ｃ，１２ｄを突出させるのに代えて、図６に示すように、予め扉体１２に取付けたナット２３に、側部戸当り１３側からピン１２ｃ，１２ｄをねじ込むものでも良い。   Further, instead of projecting the pins 12c and 12d from the inside of the door body 12, as shown in FIG. 6, the pins 12c and 12d from the side of the side door 13 are connected to the nut 23 previously attached to the door body 12. It can be screwed.

また、図７に示したように、接触時の摩擦抵抗を抑えるために、前記ピン１２ｃ，１２ｄに車輪２４を取り付けても良い。   Further, as shown in FIG. 7, wheels 24 may be attached to the pins 12c and 12d in order to suppress frictional resistance during contact.

１１ 浮体式フラップゲート
１２ 扉体
１２ａ 基端側
１２ａａ 凹円弧状接触面
１２ｂ 先端側
１２ｃ，１２ｄ ピン
１３ 側部戸当り
１３ａ 溝
１３ｂ 溝
１４ 基台
１４ａ ガイド部材
１４ａａ 凸円弧状接触面
１５ 水密ゴム膜
２４ 車輪
ｃ 回転中心 DESCRIPTION OF SYMBOLS 11 Floating type flap gate 12 Door body 12a Base end side 12aa Concave arc-shaped contact surface 12b Front end side 12c, 12d Pin 13 Side door contact 13a Groove 13b Groove 14 Base 14a Guide member 14aa Convex arc-shaped contact surface 15 Watertight rubber film 24 wheels c center of rotation

Claims (3)

開口部或いは出入口に設置され、水が流入する際、前記開口部或いは前記出入口を遮断すべく、前記流入する水の方向に高さ方向の平面内で、基端側を回転中心として先端側が起立揺動する扉体を有する浮体式フラップゲートであって、
扉体に設けるヒンジ機構を、扉体の先端側側面と基端側側面にそれぞれ突設状に取り付けたピンと、これらピンを案内すべく扉体の両側の側部戸当りに設けた、扉体の前記回転中心を中心とする円弧状の溝とで構成すると共に、
前記ヒンジ機構のガイド機構を、扉体の基端側に設けた凹円弧状の接触面と、扉体を収容する基台側に設けた、前記凹円弧状の接触面と対をなす凸円弧状の接触面とで構成し、
扉体の基端側と基台を繋ぐ水密ゴム膜を、前記扉体の回転中心を通るように配置したことを特徴とする浮体式フラップゲート。 Installed at the opening or entrance, when water flows in, the distal end rises with the base end as the center of rotation in a plane in the height direction in the direction of the inflowing water to block the opening or entrance. A floating flap gate having a swinging door,
A door body provided with a hinge mechanism provided on the door body in a projecting manner on each of the front end side surface and the base end side surface of the door body, and provided on the side doors on both sides of the door body to guide these pins. And an arc-shaped groove centered on the rotation center of
Convex circle which makes the guide mechanism of the said hinge mechanism a pair with the concave arc-shaped contact surface provided in the base end side of the door body, and the concave arc-shaped contact surface provided in the base side which accommodates a door body Composed of arcuate contact surfaces,
The watertight rubber membrane connecting the base end and the base of the door body, floating body flap gate, characterized in that arranged so as to pass through the rotation center of the door body. 扉体の先端側側面と基端側側面に取り付けたピンは、位相のずれが可能な限り９０°となるように設けられていることを特徴とする請求項１に記載の浮体式フラップゲート。   2. The floating flap gate according to claim 1, wherein the pins attached to the front end side surface and the base end side surface of the door body are provided so that a phase shift is 90 ° as much as possible. 扉体の先端側側面と基端側側面に取り付けたピンに代えて、回転可能な車輪を取付けたことを特徴とする請求項１又は２に記載の浮体式フラップゲート。   The floating flap gate according to claim 1 or 2, wherein a rotatable wheel is attached in place of the pin attached to the distal end side surface and the proximal end side surface of the door body.
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